Reversible ratchet wrench



Feb. 6, 1962 E. D. GRISSOM REVERSIBLE RATCHET WRENCH Filed NOV. 20, 1959United States Patent finite 3,0 l 9,53 l Patented Feb. 6, l 9523,019,681 REVERSHBLE RATCHET WRENCH Everett D. Grissorn, Seiraa, Ala.(Air Force Base, San Francisco, Caiif.) Filed Nov. 20, 1959, Ser. No.854,436 1 Claim. (Cl. 81-61.)

This invention relates to a close quarter positive action wrench. It hasfor its main objects to provide such a wrench that will be highlysatisfactory for the purpose intended, simple in structure,comparatively cheap to manufacture, easy to use and keep in Workingcondition, and very durable.

In difiicult mechanical Work where a socket type wrench is required itoften occurs that there is very little room for operating a wrench. Thepresent invention is for the purpose of overcoming such trouble byproviding a wrench that will require very little room for its use andoperation.

Other objects and advantages will appear from the drawing anddescription.

By referring generally to the drawing it will be observed that FIG. 1 isa general View of a Wrench made according to this invention with coverpart removed to show the internal parts. FIG. 2 is an edge view of theentire wrench. FIG. 3 is an enlarged detail view showing the mainworking parts of the wrench.

Similar reference numerals refer to similar parts throughout the severalviews.

Referring to the drawing in detail it will be seen that the wrenchcomprises a case part 1 with an integral handle and a cover 2 bolted on,and having an operating part with integral handle 3. Two square workengaging lugs 4 and 5 integral with a round ratchet head 6 provided withteeth 7 is mounted in holes through the case bottom and cover. A curvedpart 8 is held between the case bottom and cover and has an integralpawl 9 of a size to fit into the teeth on the ratchet head, and having aslot 10 in its other end. It is additionally held in place for use byconnection to a spring 11 having one end thereof attached to the curvedpart with the other spring end attached at 12 in the side wall of thecase. The handle 3 has a neck-down end extension 13 that fits in theslot in the curved part 8. The handle 3 is mounted on a stud 14 that isinserted tightly in holes through the case bottom and cover. A spring 15is attached at one end 16 in the case at 17 with its other end attachedto the handle head portion at 18 with the spring mounted in contractingtension to cause the outer ends of the handles to remain apart when notpulled together by manual means. A pawl 19 is mounted with one end 20 incontact with the case at 21 with its other end 22 in movable contactwith the teeth on the ratchet head. A spring 23 is set in expandingtension to hold the pawl engaged with the teeth. The pawl isadditionally held between the bottom of the case and cover. A bolt 24 isattached through the case and cover to hold them together, and also as astop for the handle head portion 13. The outer end of the handle 3 isprovided with a fiat part 25 attached by rivets 26 and 27 to make itlonger for easier use.

From the foregoing it will appear that by manual operation drawing theouter end of the handle toward the case, the ratchet head willstep-by-step, and then by allowing the handle to assume its outwardposition the spring attached to the curved part will pull its tooth outof mesh With the teeth in the ratchet head. Thus it will appear that byrepeating the handle movement the toothed head part will he steppedaround and turn its work-engaging parts inserted in square recesses inany part being worked upon. It will also appear that as a result of thecompact structure of the wrench it is especially adapted for use inclose places on parts having square holes for wrench contacts.

The wrench may be made of any material suitable for the purpose, but Iprefer to use good grades of metal; also it may be made in diiterentsizes and capacities depending on how and where to be used.

While I have shown and described the preferred embodiment of myinvention, I do not Wish to limit the same to the exact and precisedetails of structure, and I reserve the right to make all modificationsand changes so long as they remain within the scope of the invention andthe following claim.

Having described my invention I claim:

A reversible ratchet wrench comprising, a main case, said case havingspace for holding operating parts and also forming part as handle means,a cover, said cover being of a size and shape to fit upon and partlyclose the case, bolts holding the case and cover together, a short shafthaving each end formed square and having its middle portion round, theround portion having teeth formed integral around the center thereof, around hole in the case and a same size round hole in the cover, thesetwo holes being in register with each other and having the round endportions of the shaft fitting revolvably in these holes; an elongatedopen space in one side of the case, a handle, said handle having anouter end portion with its other end fiat and blunt pointed, a stud boltmounted in the case and cover, the middle part of the stud bolt forminga shaft, the flat part of the handle having a hole therethrough andbeing mounted pivotally on the stud bolt shaft portion; a curved part,said curved part having one end as an integral tooth of a size to fitthe teeth on the said round part, the other end of the curved parthaving a slot formed therein, a small spring, this spring beingpositioned to hold the toothed end of the curved part adjacent the teethin the round part; a pawl, this pawl being positioned between the caseside and the round part with teeth, another small spring, this otherspring being positioned between the pawl and case side and being adaptedto act as a stop for the teeth in the round part; the round end of thehandle being inserted in the slot in the curved part; a comparativelylarge spring, one end of this spring being attached in the edge of theflat part of the handle with its other end attached in the side of thecase and being set to pull the handle toward the side of the case; afiat plate portion, this portion being mounted upon the outer endportion of the handle.

References Cited in the file of this patent UNITED STATES PATENTS119,317 Chandler Sept. 26, 1871 731,260 Worden June 16, 1903 858,030Schad June 25, 1907 1,970,721 Walton Aug. 21, 1934 2,542,015 EllisonFeb. 20, 1951 2,633,044 Pasquariello Mar. 31, 1953 2,704,475 Shuman Mar.22, 1955

